3979187 has 4 divisors (see below), whose sum is σ = 4054320. Its totient is φ = 3904056.

The previous prime is 3979181. The next prime is 3979193. The reversal of 3979187 is 7819793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7819793 = 23 ⋅339991.

It is an interprime number because it is at equal distance from previous prime (3979181) and next prime (3979193).

It is a cyclic number.

It is not a de Polignac number, because 3979187 - 2¹² = 3975091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3979181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37487 + ... + 37592.

It is an arithmetic number, because the mean of its divisors is an integer number (1013580).

Almost surely, 2^3979187 is an apocalyptic number.

3979187 is a deficient number, since it is larger than the sum of its proper divisors (75133).

3979187 is an equidigital number, since it uses as much as digits as its factorization.

3979187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75132.

The product of its digits is 95256, while the sum is 44.

The square root of 3979187 is about 1994.7899638809. The cubic root of 3979187 is about 158.4643048054.

Subtracting 3979187 from its reverse (7819793), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 3979187 in words is "three million, nine hundred seventy-nine thousand, one hundred eighty-seven".